Pressure-gage.



S. DINSMORE.

PRESSURE GAGE.

APPLICATION FILED MAR. 2, 1911.

' 1,023,821 Patented Apr. 23, 1912.

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$ 0 Attorneys Witnesses SAMUEL DINSMORE,

OF LYONS, KANSAS.

PRESSURE-GAGE.

Specification of Letters Patent.

Patented Apr. 23, 1912.

Application filed March 2, 1911. Serial No. 611,806.

To all whom it may concern Be it known that I, SAMUEL DINsMORE, acitizen of the United States, residing at Lyons, in the county of Riceand State of Kansas, have invented a new and useful Pressure-Gage, ofwhich the following is a specification.

It is the object of the present invention to provide an improvedpressure gage and the primary aim of the invention is to provide a gageof this type so constructed that it may be read from either side.

A further aim of the invention is to so construct the gage that theindications upon the two dial faces thereof will necessarily beidentical.

The invention further contemplates the provision of a novel adjustableconnection between the fluid-pressure actuated member of the gage andthe indicator spindle actuating means, enabling the gage to be adjustedto compensate for wear and to suit varying conditions.

In the accompanying drawings,-Figure 1 is a face view of one side of thegage. Fig. 2 is a transverse sectional view, parts being shown inelevation. Fig. 3 is a sectional view on the line 33 of Fig. 2. Fig. 4Cis a detail perspective view of the indicator spindles of the gage, andtheir related parts. Fig. 5 is a sectional view in detail illustratingthe adjustable connection between the fluid pressure actuated member andthe segments which actuate the indicator spindles.

In the drawings, the gage is illustrated as including a casing 5 of theordinary form except that instead of a single dial it is provided withtwo, one indicated by the numeral 6 and the other by the numeral 7. Aplate 8 is fixed back of each dial 6 and 7 and between these platesthere is fixedly sup ported a plate 9. The plate 9 is preferably heldassembled with the plates 8, and between the same, by connecting theplates 8 by pins 10 and securing the plate 9 at its end upon these pins.The plate 9, at a point between its end and coincident with the axis ofthe casing 5, is formed with a bearing 11 in which seats the inner endsof alined spindles l2 and 13. At their outer ends, these spindles carryindicator hands 14 which cooperate with the respective dials 6 and 7.Inasmuch as the spindles are not connected at their inner ends, they aresupported for independent rotation and upon the spindle there are fixedpinions 15 and 16, respectively.

The spindles 12 and 13 are designed to be rotated through the medium ofoscillatory gear segments and of the segments one as indicated by thenumeral 17 and the other by the numeral 18. Each segment has a stem 20pivoted at its end as at 21 upon one of the pins 10. The segments arethus supported for oscillation and they mesh with the respective pinions15 and 16. A strip 22 is formed with a slot 23 and screws 24 are engagedthrough this slot and into the stem of the segment 17. In a like manner,a strip 25 is secured adjustably upon the stem of the segment 18. Thefunction of these strips will be presently fully explained.

The fluid pressure actuated member of the gage is indicated bythenumeral 26 and is of the ordinary tubular form. Pivoted to the end ofthe member 26 are rods 27 and 28, the rod 27 being pivoted at its lowerend to the outer end of the strip 22 and the rod 28 being pivoted at itslower end to the inner end of the strip 25. From the above it will beobserved that the points of pivotal connection of the arms 27 and 28 arelocated at opposite sides of the pin which constitutes the axis of thetwo segments, it being understood that the strips 22 and 25 arerelatively reversed. It will further be understood at this point that asthe pressure increases, the tendency of the member 26 to straighten willresult in an upward pull being exerted upon both rods 27 and 28. Thiswill result in a downward swinging of the segment 17 and an upwardswinging of the segment 18 thereby rotating the spindles 12 and 13 inopposite directions but to the same degree. The amplitude of angularmovement of the segments may be varied by adjusting the strips 22 and25, as will be readily understood. Also the position of the arms 27 and28 may be reversed for the purpose of converting the device into avacuum gage.

What is claimed is In a pressure gage, the combination with two axiallyalined spindles, an indicator carried by each, a gear also carried byeach spindle, two spaced plates in which the respective spindles arejournaled, two geared segments, one in mesh with each gear, an

arm carried by each segment, a strip adjustably carried by, the arm ofeach segment, a single pressure actuated member, and two links pivotallyconnected at the same point to the free end thereof and to theirrespective adjustable strips of the segments, one of said links beingconnected to the inner end of its strip and the other link beingconnected to the outer end of its strip,

whereby the indicators are operated in op- 10 posite directions and inunison.

In testimony that I claim the foregoing as my own, I have heretoai'lixed my signature in the presence of two Witnesses.

SAMUEL DINSMORE. Vitnesses C. E. HENRY, D. C. I/VOLFE.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. C.

